Denver Minted Barber Halves
The Denver Mint opened in 1906, sealing the fate of the New Orleans Mint. Output was spotty, with no Denver Mint Barber halves produced in 1909, 1910, or 1914. So you'll get all the 'D' mint Barber halves ever made.
1906-D
1907-D
1908-D
1911-D
1912-D
1915-D
1913-D (KEY)